A NEW SCALE INSECT ON RHIZOPHORA 
By T. D. A. Cockerell 
Of the University of Colorado 
ONE TEXT FIGURE 
The mangroves ( Rhizophora ) , fringing tropical shores, have 
been found to support a peculiar coccid fauna, including Cteno- 
chiton rhizophorss Masked in Australia, Mesolecanium rhizo- 
phorx Cockerell in Brazil, and Chrysomphalus rhizophorse 
Cockerell in Mexico. A new species is now to be described 
from the Philippine Islands. 
Targionia merrilli sp. nov. Text fig. 1. 
Female scale 3 to 3.5 millimeters in diameter, flattened, some- 
what convex, circular, pale gray; first skin near margin, ap- 
pearing as a small black nipplelike prominence. Young scales 
reddish, with the first skin orange. 
Fig. 1 . Targionia merrilli sp. nov., a , female insect; b, caudal end of female; c, Chrysom- 
phalus rkizophorse Cockerell, caudal end of female. 
Female dark brown, about 2.5 millimeters long; cephalic 
region broadly rounded, separated by a deep suture from the 
wider thoracic region; no circumgenital glands; anal orifice 
narrow and elongate, about 100 p. from hind end; five pairs of 
low lobes, the first broad and close together, but not touching; 
second and third broad and rounded, the third sometimes dis- 
tinctly notched; fourth very broad, with the margin variable, 
but usually more or less flattened or tablelike in outline; fifth 
rounded, widely separated from fourth; spines small and in- 
conspicuous; squames very minute, rudimentary; at the bases 
of the lobes are long claviform paraphyses or glands, one be- 
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